I have just checked the MHRA website for the latest Oestrogel patient information leaflets (yes, there are 3 for the 'same product'), which you can view here https://mhraproducts4853.blob.core.windows.net/docs/adba3ee8c5fb48816a1fd3af01dcd8f5e7e430c5
If the links don't work (you have to accept the disclaimer before the page opens), just type Oestrogel on the MHRA products page https://products.mhra.gov.uk/ , tick the 'I have read and understand the disclaimer' box, click 'agree', and click PIL of this product OESTROGEL PUMP-PACK 750 MICROGRAMS/ACTUATION GEL
leaflet MAH BRAND_PL 28397-0002.pdf The other PIL are for the parallel imports (PLPI).
You will have access to 3 PILs. Basically, they have different instructions for different pumps, but remember that both cylindrical bottles have the same pump/bottles, the only difference disclosed by Besins is that one has an adhesive label and the other a printed label.The other pump (conical bottlle) doesn't have the 'stopper', hence the need for a separate leaflet.
This change has been last updated on the EMC (electronic medicines compendium) on 12 July 2024 (attached snapshot). 'Joint PIL superseded by individual PILs).
Based on this evidence, I think Besins will keep manufacturing the gel at both facilities (Dogenbros, Belgium, and Montrouge, France) for a long time, and unfortunately Besins is not required by law to disclose which batches are manufactured in Belgium and which are manufactured in France. IMHO, this is a disgrace.